An unvaccinated child is the 22nd confirmed measles patient in Clark County, Washington, as a public health emergency continues.

County officials say they now have 22 confirmed cases and three suspected cases. And they have identified three more sites where people may have been exposed.

The list now includes Memorial Urgent Care in Vancouver from 4:30 to 7:50 p.m. on Saturday, Jan. 19, and the Dollar Tree on Northeast 76th Street in Vancouver from 8:10 to 10:50 p.m. on Tuesday, Jan. 15.

Health officials also say anyone who has been at Orchards Elementary School in Vancouver recently may have been exposed. They announced Sunday that Evergreen High School in Vancouver is also a possible exposure site.

Starting Tuesday, people who have been identified as possibly being exposed will receive an automated call from Clark County Public Health around 10:30 a.m. and another around 1 p.m. if they do not answer the first time. These automated calls are meant to help public health officials find and treat patients. But not everyone who may have been exposed will receive the call.

If you believe you are experiencing measles symptoms, call your health care provider before visiting to avoid exposing others. A full list of exposure sites is available on the Clark County Public Health website.

Most of the confirmed cases so far are children 10 and younger. Of the 22 confirmed cases, 19 involve people who have not been immunized against measles.